Protein
DNA integrity scanning protein DisA
Organism
Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL 8165 / MA-4680)
Function
Has also diadenylate cyclase activity, catalyzing the condensation of 2 ATP molecules into cyclic di-AMP (c-di-AMP). c-di-AMP acts as a signaling molecule that couples DNA integrity with progression of sporulation. The rise in c-di-AMP level generated by DisA while scanning the chromosome, operates as a positive signal that advances sporulation; upon encountering a lesion, the DisA focus arrests at the damaged site and halts c-di-AMP synthesis.
Similarity
Belongs to the DisA family.
Sequence
MAANDRAAAPGKSGGSSGADGLMRASLSAVAPGTALRDGLERILRGNTGGLIVLGSDKTVEAMCTGGFVLDVEFTATRLRELCKLDGGIVLSSDLSKILRAGVQLVPDPMIPTEETGTRHRTADRVSKQVGFPVVSVSQSMRLVALYVDGMRRVLEDSAAILSRANQALATLERYKLRLDEVAGTLSALEIEDLVTVRDVSAVAQRLEMVRRIATEIAEYVVELGTDGRLLALQLDELIAGVEPERELVVRDYVPEPTAKRSRTVDQALYELDALTHAELLELATVAKALGYTGSPEALDSAVSPRGFRLLAKVPRLPGAIIDRLVEHFGGLQKLLAASVDDLQTVDGVGEARARSVREGLSRLAESSILERYV